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The Perfect Milk Substitute?

CSEF · 2013 Biochemistry/ Molecular Biology

Dawn F. Bransby · Fruitvale Junior High School, Bakersfield, Kern County

Overview

Objectives/Goals Do milk substitutes have a trace of lactose? Methods/Materials Soy milk, almond milk, rice milk, lactose free milk, test tubes, stopwatch, glucose tablets, lactase drops, Diastix Reagent for Urinalysis. Results The percentage of glucose found before and after adding lactase is as follows: water 0-0, glucose water 2-2, whole milk 0-.25, 2% milk 0-.25, almond milk 0-0, rice milk 0-.75, soy milk 0-0, lactose free milk 2-2. Conclusions/Discussion My hypothesis was incorrect. When I tested soy milk, almond milk, rice milk, and lactose free milk for lactose, I found no lactose in any milk substitute.

Summary statement

To find a perfect milk substitute there has to be no lactose which you can test for by adding the enzyme lactase and then test for glucose using Diastix glucose test strips.

Help received

Dad helped order the glucose strips, glucose tablets, and lactose drops.

Competition history

  • CSEF 2013 Biochemistry/ Molecular Biology · Entry J0501

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